Calvin, 30, and Rosie, 27, were pictured leaving Ago Italian restaurant in the West Hollywood area with friends on Friday.

Model Rosie looked stunning in a black mini dress with a wide belt and leather jacket, while Calvin was his usual suave self in a navy jacket, black T-shirt and trousers and smart shoes.

Rita with Calvin before the split

There was no sign of Rosie’s partner, actor Jason Statham, 46, famed for his tough guy roles. They have been dating for four years.

Meanwhile, Rita didn’t appear to be letting the split affect her too much either, posing for photos with fans in an equally slinky black mini dress.

Rita Ora at Chateau Marmont in West Hollywood

Calvin, of Dumfries, announced on Twitter on Friday that their relationship was over.

He tweeted: “To address speculation: myself and Rita ended our relationship some time ago. She is a beautiful, talented woman and I wish her all the best.”

The two began dating in May 2013 but were last seen together in New York at the end of April.

Rita has yet to publicly comment on the split – although US celeb website TMZ reported she’s been spending time with Justin Bieber. It claimed their friendship may have caused tension between her and Calvin.

Rita poses for photo with fan

Throughout the promotion of their collaboration single I Will Never Let You Down, which made number one last month, she spoke lovingly of Harris.

She said: “It was amazing. I always thought it was a bad idea to work with your partner but I was wrong. It was actually the most liberating, free, almost cleansing experience.

Rita, who was in Glasgow last month for Radio 1’s Big Weekend festival, also spoke of their long-distance relationship.

She said: “We’re on different sides of the world all the time. But if you really want something, you make it work.

“And you make sure when you are together it’s incredible.”

Calvin made chart history last year when he became the first artist to land nine top 10 singles from one album, his record 18 Months.